In connection with the 10th anniversary of the Sept. 11, 2001 terrorist attacks on the World Trade Center and the Pentagon, U.S. television networks are planning an ambitious schedule of retrospectives and original programming. Here's a network-by-network breakdown ....

CBS

Robert DeNiro – whose Tribeca Film Festival grew out of the ashes of 9/11 – hosts CBS’ 9/11: 10 Years Later (8 p.m.), an update of French filmmakers Jules and Gedeon Naudet and James Hanlon's original documentary that contained the only known footage of the first plane crashing into the World Trade Center. (The Naudet brothers were shooting a documentary with the firefighters from Engine 7 in Lower Manhattan at the time of the attacks.) The new film includes updates with firefighters who appeared in the original film as well a tour of the ongoing construction efforts at Ground Zero.

At 10 p.m., newsmagazine 20/20 will have Remembrance and Renewal: 10 Years After the 9/11 Attacks, which takes a look at "some of the most moving stories of Americans who lived through the terrorist attacks.

NBC

NBC News anchors recall personal memories of that day for 9/11: In Our Own Words (8 p.m.).

CNN

In addition to live coverage of the Sept. 11 memorial dedications in New York, the Pentagon and Shanksville, Penn., CNN also will bow multiple themed documentaries. Footnotes of 9/11 (Sept. 6, 11 p.m.) features interviews with people who are literal footnotes in The 9/11 Commission Report – and became figurative footnotes to history – such as the ticket agents who checked in some of the terrorists and the maintenance technician who answered a call from one of the planes under attack. CNN chief medical correspondent Dr. Sanjay Gupta examines the effects of the toxic dust and noxious fumes at Ground Zero in Terror in the Dust (Sept. 7, 11 p.m.). Beyond Bravery: The Women of 9/11 (Sept. 8, 11 p.m.) profiles female rescue workers at Ground Zero.

OWN explores personal stories of twins whose siblings were killed in the terrorist attacks in The Twins of the Twin Towers (9 p.m.) and the lives of five widows of firefighters killed that day in From the Ground Up (10:15 p.m.).

PBS' lineup includes NewsHour: American Remembers 9/11 (8 p.m.), a special installment of the nightly broadcast covering the memorial observances at Ground Zero, the Pentagon and Shanksville, Penn., and Great Performances (9 p.m.), which will telecast the Sept. 10 New York Philharmonic Concert at Lincoln Center’s Avery Fisher Hall marking the tenth anniversary of the attacks.